The environment of the display area requires low illumination, and the reasons for the lower...

If the ambient light is too bright and the pupil is constricted, there will be a difference in the display of black and white pixels

If the ambient light is too dim and the pupil is constricted, the black and white pixel display will show a difference

Counting casts use white screens, and in order to get enough dark black pixels, a lower ambient illumination

is required The number of shots uses a white screen, and in order to get enough black pixels, a lower ambient illumination answer is required